EP2194276A3 - Two-shaft vacuum pump - Google Patents
Two-shaft vacuum pump Download PDFInfo
- Publication number
- EP2194276A3 EP2194276A3 EP09014529.3A EP09014529A EP2194276A3 EP 2194276 A3 EP2194276 A3 EP 2194276A3 EP 09014529 A EP09014529 A EP 09014529A EP 2194276 A3 EP2194276 A3 EP 2194276A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- vacuum pump
- piston
- shaft vacuum
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C29/0071—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Die Erfindung betrifft eine Vakuumpumpe mit einer ersten Welle (10), einem damit verbundenen ersten Kolben (12), einer zweiten Welle (14), einem damit verbundenen zweiten Kolben (16), einem Antrieb (54, 56), welcher wenigstens eine Welle in Drehung versetzt, wobei beide Wellen gegenläufig mit gleicher Frequenz drehend in Rotation versetzt sind, und wenigstens einem Lager (22, 24, 26, 28) zur drehbaren Unterstützung einer Welle. Um die Gefährdung durch eine Berührung der Kolben untereinander oder mit dem Gehäuse zu verringern, schlägt die Erfindung vor, dass zwischen Kolben und Lager eine Freigabestruktur vorgesehen ist. The invention relates to a vacuum pump having a first shaft (10), a first piston (12) connected thereto, a second shaft (14), a second piston (16) connected thereto, a drive (54, 56) which has at least one shaft rotated, wherein both shafts are rotationally offset in opposite directions at the same frequency, and at least one bearing (22, 24, 26, 28) for rotatably supporting a shaft. To reduce the risk of contact between the pistons with each other or with the housing, the invention proposes that a release structure is provided between the piston and the bearing.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008060539A DE102008060539A1 (en) | 2008-12-04 | 2008-12-04 | Two-shaft vacuum pump |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2194276A2 EP2194276A2 (en) | 2010-06-09 |
EP2194276A3 true EP2194276A3 (en) | 2014-08-27 |
EP2194276B1 EP2194276B1 (en) | 2020-09-09 |
Family
ID=41796156
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09014529.3A Active EP2194276B1 (en) | 2008-12-04 | 2009-11-20 | Two-shaft vacuum pump |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2194276B1 (en) |
DE (1) | DE102008060539A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE810419C (en) * | 1949-01-01 | 1951-08-09 | Otto Becker | Rotary piston blower |
US3558246A (en) * | 1968-11-07 | 1971-01-26 | Goeppner Kaiserslautern Eisen | Rotary pump for viscous fluids |
JPS59160084A (en) * | 1983-03-02 | 1984-09-10 | Nippon Denso Co Ltd | Rotary fluid pressurizing and sending device |
DE3411931A1 (en) * | 1983-09-30 | 1985-04-25 | Aisin Seiki K.K., Kariya, Aichi | BLOWER OF THE ROOTS DESIGN |
EP0209788A2 (en) * | 1985-07-26 | 1987-01-28 | Toyota Jidosha Kabushiki Kaisha | A roots type pump |
WO1997012158A1 (en) * | 1995-09-28 | 1997-04-03 | Muellenberg Ralph | Torque-transmitting arrangement |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4662826A (en) * | 1984-04-20 | 1987-05-05 | Tokico Ltd. | Vacuum pump system including serially connected rotary and reciprocating vacuum pumps |
DE19807923A1 (en) * | 1997-03-03 | 1998-11-12 | Luk Fahrzeug Hydraulik | Compressor for vehicle air conditioning unit |
JPH10259830A (en) * | 1997-03-21 | 1998-09-29 | Toyota Autom Loom Works Ltd | Power transmission structure |
JP2005226451A (en) * | 2004-02-10 | 2005-08-25 | Zexel Valeo Climate Control Corp | Torque transmission device of compressor |
DE102005057618A1 (en) * | 2005-12-02 | 2007-06-06 | Pfeiffer Vacuum Gmbh | Method for operating a vacuum pump |
-
2008
- 2008-12-04 DE DE102008060539A patent/DE102008060539A1/en active Pending
-
2009
- 2009-11-20 EP EP09014529.3A patent/EP2194276B1/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE810419C (en) * | 1949-01-01 | 1951-08-09 | Otto Becker | Rotary piston blower |
US3558246A (en) * | 1968-11-07 | 1971-01-26 | Goeppner Kaiserslautern Eisen | Rotary pump for viscous fluids |
JPS59160084A (en) * | 1983-03-02 | 1984-09-10 | Nippon Denso Co Ltd | Rotary fluid pressurizing and sending device |
DE3411931A1 (en) * | 1983-09-30 | 1985-04-25 | Aisin Seiki K.K., Kariya, Aichi | BLOWER OF THE ROOTS DESIGN |
EP0209788A2 (en) * | 1985-07-26 | 1987-01-28 | Toyota Jidosha Kabushiki Kaisha | A roots type pump |
WO1997012158A1 (en) * | 1995-09-28 | 1997-04-03 | Muellenberg Ralph | Torque-transmitting arrangement |
Also Published As
Publication number | Publication date |
---|---|
DE102008060539A1 (en) | 2010-06-10 |
EP2194276A2 (en) | 2010-06-09 |
EP2194276B1 (en) | 2020-09-09 |
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